diff options
Diffstat (limited to 'drivers/iio/health')
-rw-r--r-- | drivers/iio/health/afe4403.c | 21 | ||||
-rw-r--r-- | drivers/iio/health/afe4404.c | 8 |
2 files changed, 16 insertions, 13 deletions
diff --git a/drivers/iio/health/afe4403.c b/drivers/iio/health/afe4403.c index dc22dc363a99..a3507624b30f 100644 --- a/drivers/iio/health/afe4403.c +++ b/drivers/iio/health/afe4403.c @@ -23,6 +23,8 @@ #include <linux/iio/triggered_buffer.h> #include <linux/iio/trigger_consumer.h> +#include <asm/unaligned.h> + #include "afe440x.h" #define AFE4403_DRIVER_NAME "afe4403" @@ -63,6 +65,7 @@ static const struct reg_field afe4403_reg_fields[] = { * @regulator: Pointer to the regulator for the IC * @trig: IIO trigger for this device * @irq: ADC_RDY line interrupt number + * @buffer: Used to construct data layout to push into IIO buffer. */ struct afe4403_data { struct device *dev; @@ -72,6 +75,8 @@ struct afe4403_data { struct regulator *regulator; struct iio_trigger *trig; int irq; + /* Ensure suitable alignment for timestamp */ + s32 buffer[8] __aligned(8); }; enum afe4403_chan_id { @@ -220,13 +225,11 @@ static int afe4403_read(struct afe4403_data *afe, unsigned int reg, u32 *val) if (ret) return ret; - ret = spi_write_then_read(afe->spi, ®, 1, rx, 3); + ret = spi_write_then_read(afe->spi, ®, 1, rx, sizeof(rx)); if (ret) return ret; - *val = (rx[0] << 16) | - (rx[1] << 8) | - (rx[2]); + *val = get_unaligned_be24(&rx[0]); /* Disable reading from the device */ tx[3] = AFE440X_CONTROL0_WRITE; @@ -309,7 +312,6 @@ static irqreturn_t afe4403_trigger_handler(int irq, void *private) struct iio_dev *indio_dev = pf->indio_dev; struct afe4403_data *afe = iio_priv(indio_dev); int ret, bit, i = 0; - s32 buffer[8]; u8 tx[4] = {AFE440X_CONTROL0, 0x0, 0x0, AFE440X_CONTROL0_READ}; u8 rx[3]; @@ -322,13 +324,11 @@ static irqreturn_t afe4403_trigger_handler(int irq, void *private) indio_dev->masklength) { ret = spi_write_then_read(afe->spi, &afe4403_channel_values[bit], 1, - rx, 3); + rx, sizeof(rx)); if (ret) goto err; - buffer[i++] = (rx[0] << 16) | - (rx[1] << 8) | - (rx[2]); + afe->buffer[i++] = get_unaligned_be24(&rx[0]); } /* Disable reading from the device */ @@ -337,7 +337,8 @@ static irqreturn_t afe4403_trigger_handler(int irq, void *private) if (ret) goto err; - iio_push_to_buffers_with_timestamp(indio_dev, buffer, pf->timestamp); + iio_push_to_buffers_with_timestamp(indio_dev, afe->buffer, + pf->timestamp); err: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/health/afe4404.c b/drivers/iio/health/afe4404.c index e728bbb21ca8..cebb1fd4d0b1 100644 --- a/drivers/iio/health/afe4404.c +++ b/drivers/iio/health/afe4404.c @@ -83,6 +83,7 @@ static const struct reg_field afe4404_reg_fields[] = { * @regulator: Pointer to the regulator for the IC * @trig: IIO trigger for this device * @irq: ADC_RDY line interrupt number + * @buffer: Used to construct a scan to push to the iio buffer. */ struct afe4404_data { struct device *dev; @@ -91,6 +92,7 @@ struct afe4404_data { struct regulator *regulator; struct iio_trigger *trig; int irq; + s32 buffer[10] __aligned(8); }; enum afe4404_chan_id { @@ -328,17 +330,17 @@ static irqreturn_t afe4404_trigger_handler(int irq, void *private) struct iio_dev *indio_dev = pf->indio_dev; struct afe4404_data *afe = iio_priv(indio_dev); int ret, bit, i = 0; - s32 buffer[10]; for_each_set_bit(bit, indio_dev->active_scan_mask, indio_dev->masklength) { ret = regmap_read(afe->regmap, afe4404_channel_values[bit], - &buffer[i++]); + &afe->buffer[i++]); if (ret) goto err; } - iio_push_to_buffers_with_timestamp(indio_dev, buffer, pf->timestamp); + iio_push_to_buffers_with_timestamp(indio_dev, afe->buffer, + pf->timestamp); err: iio_trigger_notify_done(indio_dev->trig); |